CN214203988U

CN214203988U - Base station antenna

Info

Publication number: CN214203988U
Application number: CN202120111059.3U
Authority: CN
Inventors: 林茂荣; 贺亮
Original assignee: Shenzhen Grentech Corp ltd
Current assignee: Shenzhen Grentech Corp ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-09-14
Anticipated expiration: 2031-01-15

Abstract

The utility model provides a base station antenna, including the reflecting plate, still including setting up two radiation arrays at the positive vertical both sides of reflecting plate, every radiation array includes N low frequency radiating element, N-1 first high frequency radiating element and N second high frequency radiating element, N low frequency radiating element is along the longitudinal interval arrangement of reflecting plate, center department between two adjacent low frequency radiating element is equipped with a first high frequency radiating element, the inboard center department of each low frequency radiating element is equipped with a second high frequency radiating element, N low frequency radiating element constitutes low frequency array, N-1 first high frequency radiating element and N second high frequency radiating element constitute high frequency array; two combiner groups are arranged on the longitudinal two sides of the back surface of the reflecting plate; each combiner group is connected with the high-frequency array of the corresponding radiation array and is connected with the corresponding first radio-frequency connector and the second radio-frequency connector on one transverse side of the reflecting plate. The utility model discloses can satisfy miniaturized requirement and multifrequency section demand.

Description

Base station antenna

[ technical field ] A method for producing a semiconductor device

The utility model relates to a mobile communication field, concretely relates to base station antenna.

[ background of the invention ]

The frequency range of the antenna network of the base station is more and more, and the number of the base stations is more and more. The capital investment of base station construction is increased, the awareness of harm of residents to radiation is continuously strengthened, and the trouble of site selection is greatly caused. The existing base station antenna requires that the antenna needs one-station coverage for 2G and 4G frequency bands. The occupied area of the base station antenna is reduced, and the arrangement number of the stations is reduced, so that the property cost caused by the establishment of the communication base station is reduced. At present, the demand of operators on multiband and miniaturized antennas is more and more strong, and miniaturized antennas capable of realizing multiband coverage in one station mode are urgently needed.

[ Utility model ] content

The utility model aims to provide a base station antenna can make base station antenna satisfy miniaturized requirement and multifrequency section demand.

In order to achieve the above object, the present invention provides a base station antenna, including a reflection plate, and further including two radiation arrays disposed on two longitudinal sides of the reflection plate, each radiation array includes N low-frequency radiation units, N-1 first high-frequency radiation units and N second high-frequency radiation units, the N low-frequency radiation units are arranged along the longitudinal direction of the reflection plate at intervals, one first high-frequency radiation unit is disposed at the center between two adjacent low-frequency radiation units, one second high-frequency radiation unit is disposed at the center of the inner side of each low-frequency radiation unit, the N low-frequency radiation units form a low-frequency array, and the N-1 first high-frequency radiation units and the N second high-frequency radiation units form a high-frequency array; two combiner groups are arranged on the longitudinal two sides of the back surface of the reflecting plate, and the two combiner groups respectively correspond to the two radiation arrays; each combiner group is connected with the corresponding high-frequency array of the radiation array and connected with the corresponding first radio-frequency connector and the corresponding second radio-frequency connector on one lateral side of the reflecting plate, the combiner group is used for splitting the high-frequency mobile network signal output by the corresponding high-frequency array into a low-frequency band signal and a high-frequency band signal, and the first radio-frequency connector and the second radio-frequency connector are respectively used for sending the low-frequency band signal and the high-frequency band signal output by the corresponding combiner group to external equipment.

As a preferred technical solution, a first phase shifter is connected in series between each combiner group and the corresponding first radio frequency connector, and the first phase shifter is disposed on the back of the reflection plate and is used for performing electronic downtilt adjustment on the low-frequency band signal output by the corresponding combiner group.

As a preferred technical solution, a second phase shifter is connected in series between each combiner group and the corresponding second radio frequency connector, and the second phase shifter is disposed on the back of the reflection plate and is used for performing electronic downtilt adjustment on the high-frequency band signal output by the corresponding combiner group.

As a preferred technical solution, each combiner group includes a plurality of combiners, the plurality of combiners are arranged at intervals along the longitudinal direction of the reflection plate, and each combiner is connected to the corresponding first phase shifter and the second phase shifter.

As a preferred technical solution, in each radiation array, the first high-frequency radiation unit and the second high-frequency radiation unit are high-frequency oscillators with the same structure, and in a plurality of combiners of each combiner group, each combiner is connected with at least one high-frequency oscillator of a corresponding high-frequency array, and is configured to split a high-frequency mobile network signal output by the high-frequency oscillator into a low-frequency band signal and a high-frequency band signal.

As a preferred technical solution, the combiner includes a housing and a filter band disposed in the housing.

As a preferred technical solution, the low-frequency radiating unit is a radiating unit of a low-frequency communication network.

In a preferred embodiment, in each radiation array, the first high-frequency radiation unit and the second high-frequency radiation unit are high-frequency oscillators with the same structure, and the high-frequency oscillators are radiation units of a high-frequency mobile network.

As a preferable technical solution, a first vertical flange is formed by bending one lateral side of the reflector towards the front of the reflector, and the first radio frequency connector and the second radio frequency connector are arranged on one side of the first vertical flange far away from the center of the reflector.

As a preferred technical scheme, two longitudinal sides of the reflector are respectively bent towards the front surface of the reflector to form second vertical flanges, the two second vertical flanges are respectively connected with two ends of the first vertical flange, and a raised spacer is formed at the top of each second vertical flange at a position corresponding to each low-frequency radiation unit.

The utility model provides a base station antenna, its radiation array adopts the low frequency radiation unit, the coaxial nested mode of first high frequency radiation unit and second high frequency radiation unit, make every radiation array all including low frequency array and high frequency array, and set up the mode that combiner group carries out the reposition of redundant personnel to the high frequency mobile network signal of high frequency array output at the back of reflecting plate, thereby the quantity of reducible radiation array, make every radiation array can satisfy the sharing of a plurality of frequency channels, thereby can realize reducing the size of base station antenna, make the base station antenna satisfy miniaturized requirement and multifrequency section demand.

[ description of the drawings ]

To further disclose the specific technical content of the present disclosure, please refer to the attached drawings, wherein:

fig. 1 is a schematic top view of a base station antenna according to an embodiment of the present invention, in which fig. 1 does not show a first rf connector and a second rf connector;

FIG. 2 is a schematic diagram of a portion of the front side of the base station antenna shown in FIG. 1;

FIG. 3 is a schematic diagram of a portion of the structure of the back side of the base station antenna shown in FIG. 1;

fig. 4 is a schematic plan view of a combiner of the base station antenna shown in fig. 1;

fig. 5 is a schematic plan view of a first sheet structure of a first phase shifter of the base station antenna of fig. 1;

fig. 6 is a schematic plan view of a second sheet structure of a second phase shifter of the base station antenna of fig. 1.

Description of the symbols:

the reflector 10 has a first vertical flange 12

Second vertical flange 14 spacer 16

Radiating array 30 low frequency radiating element 32

First high-frequency radiating unit 34 and second high-frequency radiating unit 36

Combiner group 50 combiner 52

Shell 522 filter band 524

Input 526 a first output 528

Second output terminal 530

First RF connector 62 and second RF connector 64

Fastening screw 66

First phase shifter 70 first lamellar structure 72

First input port 722 first connection port 724

Second phase shifter 80 second lamellar structure 82

Second input port 822 and second connection port 824

[ detailed description ] embodiments

Referring to fig. 1 to 3, the present embodiment provides a base station antenna, which includes a metal reflector 10, two radiation arrays 30 disposed on two longitudinal sides of a front surface of the reflector 10, and two combiner groups 50 disposed on two longitudinal sides of a back surface of the reflector 10.

Each radiating array 30 includes N low frequency radiating elements 32, N-1 first high frequency radiating elements 34 and N second high frequency radiating elements 36. The N low-frequency radiating elements 32 are arranged at intervals along the longitudinal direction of the reflector 10, one first high-frequency radiating element 34 is arranged at the center between two adjacent low-frequency radiating elements 32, and one second high-frequency radiating element 36 is arranged at the center of the inner side of each low-frequency radiating element 32. The N low frequency radiating elements 32 form a low frequency array, and the N-1 first high frequency radiating elements 34 and the N second high frequency radiating elements 36 form a high frequency array. The two combiner groups 50 correspond to the two radiation arrays 30, respectively. Each combiner group 50 is connected to a corresponding high frequency array of the radiating array 30 and to a corresponding first rf connector 62 and second rf connector 64 on one lateral side of the reflector plate 10. The combiner group 50 is configured to split the high-frequency mobile network signal output by the corresponding high-frequency array into a low-frequency band signal and a high-frequency band signal required by a user, for example, if the operating frequency band of the high-frequency array is 1710-. It is understood that the low-band signal and the high-band signal of the external device received through the first rf connector 62 and the second rf connector 64 may be combined into the high-frequency mobile network signal through the corresponding combiner group 50, and the high-frequency mobile network signal may be emitted through the corresponding high-frequency array.

Through the structure, the utility model discloses a radiation array 30 adopts low frequency radiation unit 32, the coaxial nested mode of first high frequency radiation unit 34 and second high frequency radiation unit 36 for every radiation array 30 is all including low frequency array and high frequency array, and set up the mode that combiner group 50 shunts the high frequency mobile network signal of high frequency array output at the back of reflecting plate 10, thereby reducible radiation array 30's quantity, make every radiation array 30 can satisfy the sharing of a plurality of frequency channels, thereby can realize reducing the size of base station antenna, make the base station antenna satisfy miniaturization requirement and multiband demand.

Further, a first phase shifter 70 is connected in series between each combiner group 50 and the corresponding first rf connector 62, so that the number of the first phase shifters 70 is two. The first phase shifter 70 is disposed on the back surface of the reflection plate 10, and is configured to perform electronic downtilt adjustment on the low-frequency band signal output by the corresponding combiner group 50.

A second phase shifter 80 is connected in series between each combiner group 50 and the corresponding second rf connector 64, so that the number of the second phase shifters 80 is two. The second phase shifter 80 is disposed on the back surface of the reflection plate 10, and is configured to perform electronic downtilt adjustment on the high-frequency band signal output by the corresponding combiner group 50.

The position of the first phase shifter 70 and the position of the second phase shifter 80 may be set according to actual circumstances.

Each combiner group 50 includes a plurality of combiners 52, the plurality of combiners 52 are arranged at intervals along the longitudinal direction of the reflection plate 10, and each combiner 50 is connected to a corresponding first phase shifter 70 and a corresponding second phase shifter 80. In each radiation array 30, the first high-frequency radiation unit 34 and the second high-frequency radiation unit 36 are high-frequency oscillators with the same structure, and in the plurality of combiners 52 of each combiner group 50, each combiner 52 is connected with at least one high-frequency oscillator of the corresponding high-frequency array, and is used for splitting the high-frequency mobile network signal output by the high-frequency oscillator into a low-frequency band signal and a high-frequency band signal.

In the present embodiment, each combiner group 50 includes five combiners 52 (only four combiners 52 are shown in each combiner group 50 in fig. 3), the number of the high-frequency oscillators in each radiation array 30 is thirteen, the number of the low-frequency radiation units 32 is seven (only three low-frequency radiation units 32 and five high-frequency oscillators are shown in each radiation array 30 in fig. 2), and the number of each combiner 52 connected to the high-frequency oscillator of the corresponding high-frequency array may be, for example, the first combiner 52 connected to the first, the second, and the third high-frequency oscillators, the second combiner 52 connected to the fourth, the fifth, and the sixth high-frequency oscillators, the third combiner 52 connected to the seventh, the eighth, and the ninth high-frequency oscillators, and the fourth combiner 52 connected to the tenth combiner 52, in the left-to-right direction shown in fig. 1 and 3, The eleventh high-frequency oscillator is connected to the fifth combiner 52, and the twelfth and thirteenth high-frequency oscillators are connected to the fifth combiner 52. It is understood that the number of connections between each combiner 52 and the corresponding high-frequency oscillator of the high-frequency array may be in other combinations, and may be set according to actual situations.

In this embodiment, the low frequency radiation unit 32 is a radiation unit of a low frequency communication network such as 2G. The high-frequency oscillator is a radiating element of a high-frequency moving network such as 4G.

The transverse side of the reflector 10 is bent towards the front of the reflector 10 to form a first vertical flange 12, and the first rf connector 62 and the second rf connector 64 are respectively disposed on the side of the first vertical flange 12 away from the center of the reflector 10 by fastening screws 66, such as anti-drop and anti-drop screws. The first rf connector 62 is located above the second rf connector 64. The two longitudinal sides of the reflector 10 are respectively bent towards the front of the reflector 10 to form second vertical flanges 14, the two second vertical flanges 14 are respectively connected with the two ends of the first vertical flange 12, and the top of the second vertical flange 14 is formed with a raised spacer 16 at a position corresponding to each low-frequency radiating unit 32. The two second vertical flanges 14 can improve the directional diagram performance of the two radiation arrays 30, so that the base station antenna has better front-to-back ratio and beam width, and the good electrical performance of the base station antenna is ensured. The spacer 16 can improve the radiation characteristic of the low frequency array, so that the base station antenna has good radiation performance.

Referring to fig. 4, the combiner 52 includes a housing 522 and a filter band 524 disposed within the housing 52. The filter band 524 is used for splitting the high-frequency mobile network signal output by the correspondingly connected high-frequency oscillator into a low-frequency band signal and a high-frequency band signal. The number of filter bands 524 is two. The housing 522 is provided with two input ends 526 respectively coupled to the two filter bands 524, the two input ends 526 are respectively connected to the +45 degree polarized oscillator unit and the-45 degree polarized oscillator unit of the correspondingly connected high-frequency oscillator, and the two input ends 526 are respectively used for inputting the high-frequency mobile network signal output by the +45 degree polarized oscillator unit and the-45 degree polarized oscillator unit of the corresponding high-frequency oscillator to the two filter bands 524 so as to shunt the corresponding high-frequency mobile network signal through the filter bands 524. The housing 522 is provided with two first output ends 528 and two second output ends 530 coupled to the two filter bands 524, respectively. In each combiner 52, the low-band signal and the high-band signal split by the two filter bands 524 are output to the corresponding first phase shifter 70 and second phase shifter 80 through two first output ends 528 and two second output ends 530, respectively.

Referring to fig. 5 and 6, the first phase shifter 70 includes two first sheet structures 72, each first sheet structure 72 has one first input port 722 and five first connection ports 724, where the number of the first connection ports 724 is the same as the number of the combiners 52 of the corresponding combiner group 50, that is, five first connection ports 724. In practice, the five first connection ports 724 of each first laminar structure 72 may be numbered, for example, the first connection port 1, the first connection port 2, the first connection port 3, the first connection port 4, and the first connection port 5. The second phase shifter 80 has a structure similar to that of the first phase shifter 70, and also includes two second sheet structures 82, each second sheet structure 82 has a second input port 822 and a second connection port 824, the number of the second input ports 822 is one, and the number of the second connection ports 824 is the same as the number of the combiners 52 of the corresponding combiner group 50, that is, five second connection ports 824. In practice, the five second connection ports 824 of each second sheet structure 82 may be numbered, for example, the second connection port 1, the second connection port 2, the second connection port 3, the second connection port 4, and the second connection port 5.

In the five combiners 52 and the corresponding first phase shifters 70 and second phase shifters 80 of each combiner group 50, for example, in the left-to-right direction shown in fig. 3, the two first output ends 528 of the first combiner 52 are connected to the two first connection ports 1 of the first phase shifter 70, the two second output ends 530 of the first combiner 52 are connected to the two second connection ports 1 of the second phase shifter 80, the two first output ends 528 of the second combiner 52 are connected to the two first connection ports 2 of the first phase shifter 70, the two second output ends 530 of the second combiner 52 are connected to the two second connection ports 2 of the second phase shifter 80, the two first output ends 528 of the third combiner 52 are connected to the two first connection ports 3 of the first phase shifter 70, the two second output ends 530 of the third combiner 52 are connected to the two second connection ports 3 of the second phase shifter 80, two first output ends 528 of the fourth combiner 52 are connected to two first connection ports 4 of the first phase shifter 70, two second output ends 530 of the fourth combiner 52 are connected to two second connection ports 4 of the second phase shifter 80, two first output ends 528 of the fifth combiner 52 are connected to two first connection ports 5 of the first phase shifter 70, and two second output ends 530 of the fifth combiner 52 are connected to two second connection ports 5 of the second phase shifter 80.

The two first input ports 722 of the first phase shifter 70 are respectively connected to the two corresponding first rf connectors 62, and the number of the first phase shifters 70 is two, so that the number of the first rf connectors 62 on the first vertical flange 12 is four, and the four first rf connectors 62 are arranged at intervals along the length direction of the first vertical flange 12. The two second input ports 822 of the second phase shifter 80 are respectively connected to the two corresponding second rf connectors 64, and the number of the second phase shifters 80 is two, so that the number of the second rf connectors 64 on the first vertical flange 12 is four (only one second rf connector 64 is illustrated in fig. 2), and the four second rf connectors 64 are arranged at intervals along the length direction of the first vertical flange 12.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A base station antenna comprises a reflecting plate and is characterized by further comprising two radiation arrays arranged on two longitudinal sides of the front surface of the reflecting plate, wherein each radiation array comprises N low-frequency radiation units, N-1 first high-frequency radiation units and N second high-frequency radiation units, the N low-frequency radiation units are arranged at intervals along the longitudinal direction of the reflecting plate, one first high-frequency radiation unit is arranged in the center between every two adjacent low-frequency radiation units, one second high-frequency radiation unit is arranged in the center of the inner side of each low-frequency radiation unit, the N low-frequency radiation units form a low-frequency array, and the N-1 first high-frequency radiation units and the N second high-frequency radiation units form a high-frequency array; two combiner groups are arranged on the longitudinal two sides of the back surface of the reflecting plate, and the two combiner groups respectively correspond to the two radiation arrays; each combiner group is connected with the corresponding high-frequency array of the radiation array and connected with the corresponding first radio-frequency connector and the corresponding second radio-frequency connector on one lateral side of the reflecting plate, the combiner group is used for splitting the high-frequency mobile network signal output by the corresponding high-frequency array into a low-frequency band signal and a high-frequency band signal, and the first radio-frequency connector and the second radio-frequency connector are respectively used for sending the low-frequency band signal and the high-frequency band signal output by the corresponding combiner group to external equipment.

2. The base station antenna according to claim 1, wherein a first phase shifter is connected in series between each combiner group and the corresponding first rf connector, and the first phase shifter is disposed on the back surface of the reflection plate and is configured to perform electronic downtilt adjustment on the low-frequency band signal output by the corresponding combiner group.

3. The base station antenna according to claim 2, wherein a second phase shifter is connected in series between each combiner group and the corresponding second rf connector, and the second phase shifter is disposed on the back surface of the reflection plate and is configured to perform electronic downtilt adjustment on the high-frequency band signal output by the corresponding combiner group.

4. The base station antenna according to claim 3, wherein each of the combiner groups includes a plurality of combiners arranged at intervals along a longitudinal direction of the reflection plate, and each of the combiners is connected to the corresponding first phase shifter and the corresponding second phase shifter.

5. The base station antenna according to claim 4, wherein in each radiating array, the first high-frequency radiating element and the second high-frequency radiating element are high-frequency oscillators with the same structure, and in the plurality of combiners of each combiner group, each combiner is connected with at least one high-frequency oscillator of the corresponding high-frequency array, and is configured to split the high-frequency mobile network signal output by the high-frequency oscillator into a low-frequency band signal and a high-frequency band signal.

6. The base station antenna of claim 4, wherein the combiner includes a housing and a filter band disposed within the housing.

7. The base station antenna of claim 1, wherein the low frequency radiating element is a radiating element of a low frequency telephony network.

8. The base station antenna according to claim 1, wherein in each radiating array, the first high-frequency radiating element and the second high-frequency radiating element are high-frequency oscillators with the same structure, and the high-frequency oscillators are radiating elements of a high-frequency mobile network.

9. The base station antenna according to claim 1, wherein a first vertical flange is formed by bending one lateral side of the reflector towards the front surface of the reflector, and the first radio frequency connector and the second radio frequency connector are arranged on one side of the first vertical flange far away from the center of the reflector.

10. The base station antenna according to claim 9, wherein the two longitudinal sides of the reflector are respectively bent toward the front surface of the reflector to form second vertical flanges, the two second vertical flanges are respectively connected with two ends of the first vertical flange, and a raised spacer is formed at the top of the second vertical flange at a position corresponding to each low-frequency radiating element.